Explain why it is scientifically incorrect to blame the mother for bearing female child.

The chromosome pattern in the human female is XX and that in the male is XY. Therefore, all the haploid gametes produced by the female (ova) have the chromosome X whereas in the male gametes (sperms) the sex chromosome could be either X or Y (50% of each). After fusion of the male and female gametes the zygote would carry either XX or XY depending on which of the sperm ( X or Y ) fertilised the ovum. The zygote that would have XX would develop into a female baby while XY would develop into a male baby so it is scientifically incorrect to blame the mother for bearing female child.